I guess the "rag" is just too bright blue for my taste. If you added a little more dirt to it, and maybe a few tears it might look more like cloth to me. But now that I know what it is supposed to be, it makes more sense

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EDIT: Also, another thing, if the "rag" looked a little more separated from the top of the turret, it might look a tad more life-like. Sorry to sound so critical. :P